Comprehensive Product Summary – Moxa ioLogik E1261 Ethernet Remote I/O

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### 1. Product Overview

Product Name: ioLogik E1261
Model: E1261
Series: ioLogik E1200 Series – Remote Ethernet I/O with 2-Port Ethernet Switch
Article Number: E1261
Manufacturer: Moxa Inc.

Product Type: Industrial Ethernet Remote I/O Module
Description: Ethernet-based remote I/O device supporting 8 thermocouple inputs (J, K, T, E, R, S, B, N types) with 16-bit resolution and 12 samples per second sampling rate. The unit integrates dual 10/100 Mbps Ethernet ports for daisy-chain networking and is designed for distributed temperature measurement and process monitoring in industrial automation environments.

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### 2. Key Features

- Dual Ethernet Ports: Two integrated 10/100 Mbps RJ45 ports with 1.5 kV magnetic isolation enable daisy-chain topologies, reducing the need for external switches and simplifying network wiring.
- Thermocouple Input Support: Eight differential thermocouple input channels compatible with J, K, T, E, R, S, B, and N types, providing high-accuracy temperature measurement.
- High Resolution and Sampling Rate: 16-bit A/D conversion with a total sampling rate of 12 samples per second across all channels.
- Wide Power Input Range: Operates from 12 to 36 VDC (nominal 24 VDC), supporting flexible industrial power systems.
- Compact and Lightweight Design: Dimensions of 27.8 × 124 × 84 mm and weight under 200 g, suitable for space-constrained control cabinets.
- Industrial-Grade Reliability: Operating temperature range of -10 to +60°C (optional -40 to +75°C for -T models), 5–95% non-condensing humidity tolerance.
- Active OPC Server Lite Integration: Push-based OPC communication reduces network traffic by up to 80% and improves I/O response time by up to seven times compared to polling-based systems.
- User-Defined Modbus/TCP Addressing: Flexible Modbus mapping allows seamless integration with existing SCADA or PLC systems.
- MXIO Library Support: Provides APIs for Windows, WinCE (VB/VC.NET), and Linux (C) for custom application development.
- Web-Based Configuration: Embedded web console with import/export functionality for easy setup, backup, and replication.
- Peer-to-Peer I/O Communication: Enables direct I/O signal transmission between devices without a central controller.
- DIN-Rail and Wall Mounting: Dual mounting options for versatile installation in industrial panels.
- Stress-Relief Wiring Design: Built-in strain relief for solid wiring connections up to 14 AWG.

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### 3. Technical Specifications

Ethernet Interface:
- 2 × 10/100 Mbps Ethernet switch ports (RJ45)
- Magnetic isolation: 1.5 kV
- Supported protocols: Modbus/TCP, TCP/IP, UDP, DHCP, Bootp, HTTP

Thermocouple Input (E1261):
- Channels: 8 differential inputs
- Supported sensor types: J, K, T, E, R, S, B, N
- Input range: ±78.126 mV, ±39.062 mV, ±19.532 mV (depending on type)
- Resolution: 16 bits
- Sampling rate: 12 samples/sec (total for all channels)
- Accuracy: ±0.1% FSR @ 25°C; ±0.3% FSR @ -10 to 60°C
- Input impedance: 10 MΩ minimum
- Fault/Overvoltage protection: ±35 VDC (power off), +30 VDC / -25 VDC (power on)

Power Requirements:
- Input voltage: 12–36 VDC (nominal 24 VDC)
- Power consumption: 119 mA typical @ 24 VDC

Physical Characteristics:
- Dimensions: 27.8 × 124 × 84 mm (1.09 × 4.88 × 3.31 in)
- Weight: <200 g
- Wiring: Screw clamp terminal blocks, max. 14 AWG

Environmental Limits:
- Operating temperature: -10 to +60°C (standard), -40 to +75°C (E1261-T wide-temp model)
- Storage temperature: -40 to +85°C
- Humidity: 5–95% RH, non-condensing

Mechanical Design:
- Mounting: DIN-rail or wall mount
- Enclosure: Rugged industrial-grade housing with stress-relief connector

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### 4. Functionality

Operation Principle:
The ioLogik E1261 functions as a remote Ethernet I/O server that digitizes thermocouple sensor signals and transmits temperature data over Ethernet using Modbus/TCP or OPC protocols. It can be polled by a SCADA system or configured to push data actively via Moxa’s Active OPC Server Lite.

Use Cases and Applications:
- Industrial temperature monitoring and control
- Process automation and manufacturing lines
- Environmental and energy management systems
- Tunnel and infrastructure monitoring
- Remote equipment diagnostics and predictive maintenance

Compatibility:
- SCADA/HMI systems supporting Modbus/TCP or OPC DA 1.0a/2.0/3.0
- Moxa Active OPC Server Lite for Windows-based SCADA integration
- MXIO library for custom software on Windows, WinCE, and Linux platforms

Network Topology:
- Daisy-chain Ethernet connectivity eliminates external switches
- Supports dynamic IP addressing and WAN access through Active OPC Server Lite

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### 5. Components & Accessories

Included Items:
- ioLogik E1261 Ethernet Remote I/O module
- Documentation and software CD (includes ioSearch utility, MXIO library, Active OPC Server Lite)
- Quick Installation Guide

Optional Accessories:
- DIN-rail mounting kit (standard)
- Wall-mount brackets
- Power supply (24 VDC industrial-grade)
- Ethernet cables (shielded Cat5e or Cat6 recommended)

Connectors:
- Dual RJ45 Ethernet ports
- Screw terminal blocks for thermocouple inputs and power connections

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### 6. Installation & Setup

Power Connection:
Connect 12–36 VDC to the terminal block on the top panel. The Power LED glows amber when power is applied. Use wires ≥2 mm diameter for safety.

Grounding:
Connect the ground terminal to earth ground to ensure EMC compliance and electrical safety.

Network Connection:
- Default IP: 192.168.127.254
- Subnet mask: 255.255.255.0
- Configure via direct Ethernet connection using Moxa ioSearch utility or web console.
- Supports DHCP and static IP configuration.

Mounting Options:
- DIN-rail: Snap onto standard 35 mm rail.
- Wall-mount: Use optional brackets for panel installation.

Configuration Tools:
- Web Console: Browser-based configuration for network, I/O, and system settings.
- ioSearch Utility: Discovers devices, changes IPs, upgrades firmware, imports/exports configurations.
- Active OPC Server Lite: For OPC tag generation and SCADA integration.

Factory Reset:
Hold the reset button for 5 seconds or use ioSearch/web console “Load Factory Default” option.

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### 7. Performance & Capabilities

Data Acquisition Performance:
- 8 thermocouple channels sampled at 12 samples/sec total
- 16-bit resolution ensures precise temperature readings
- ±0.1% FSR accuracy at 25°C

Network Performance:
- Dual 10/100 Mbps Ethernet ports with internal switch
- Active OPC push technology reduces network load by up to 80%
- I/O response time up to 7× faster than traditional polling systems

Processing and Communication:
- Supports Modbus/TCP for standard industrial communication
- Event-driven data updates via Active OPC Server Lite
- Peer-to-peer I/O mapping for controller-free signal transmission

Limitations:
- Total sampling rate shared across all channels (12 S/s)
- Requires external thermocouple sensors (not included)
- Relay outputs not available on this model (input-only device)

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### 8. Standards & Compliance

Safety and EMC:
- Safety: UL 508 (Industrial Control Equipment)
- EMI: FCC Part 15 Subpart B Class A, CISPR EN55022 Class A
- EMS: IEC 61000-4, IEC 61000-6 (industrial immunity standards)
- Shock: IEC 60068-2-27
- Vibration: IEC 60068-2-6
- Freefall: IEC 60068-2-32

Environmental Compliance:
- RoHS-compliant materials
- Designed for industrial temperature and humidity ranges

Network and Protocol Standards:
- Ethernet IEEE 802.3 10/100Base-T
- Modbus/TCP protocol compliance
- OPC DA 1.0a/2.0/3.0 compatibility via Active OPC Server Lite

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### 9. Additional Information

Warranty:
- Standard warranty: 5 years (for non-relay models such as E1261)
- Extended warranty available through Moxa service programs
- Relay-based models (e.g., E1214) limited to 2 years due to relay lifetime

Support & Maintenance:
- Technical support: [www.moxa.com/support](https://www.moxa.com/support)
- Firmware updates and utilities downloadable from Moxa’s website
- ioSearch and Active OPC Server Lite software provided free of charge

Maintenance Recommendations:
- Periodically verify thermocouple connections and calibration
- Keep firmware updated for latest security and performance improvements
- Use proper grounding and shielded cables to minimize noise interference

Software Ecosystem:
- Active OPC Server Lite: Push-based OPC driver for SCADA integration
- MXIO Library: API toolkit for custom application development
- ioSearch Utility: Device discovery, configuration, and firmware management

Technical Support Contacts:
- Moxa Americas: +1-714-528-6777 / Toll-free 1-888-669-2872
- Moxa Europe: +49-89-3700399-0
- Moxa Asia-Pacific: +886-2-8919-1230
- Moxa China: +86-21-5258-9955

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### Summary

The Moxa ioLogik E1261 is a high-performance, Ethernet-based remote I/O module engineered for distributed temperature measurement using thermocouples in industrial automation systems. As part of the ioLogik E1200 series, it integrates a dual-port Ethernet switch for daisy-chain networking, simplifying system architecture and reducing wiring costs. With 8 thermocouple inputs, 16-bit resolution, and 12 samples per second throughput, it delivers precise and reliable temperature data acquisition.

The E1261 supports Modbus/TCP and Moxa’s Active OPC Server Lite for seamless SCADA integration, offering event-driven data updates that minimize network traffic and latency. Its rugged design, wide power input range, and extended temperature tolerance make it suitable for harsh industrial environments such as manufacturing plants, energy facilities, and infrastructure monitoring systems.

With flexible configuration via web console, user-defined Modbus addressing, and comprehensive software tools (ioSearch, MXIO, Active OPC Server Lite), the ioLogik E1261 provides a robust, scalable, and cost-effective solution for Ethernet-based remote I/O and temperature monitoring applications.

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